There are many different kinds of diet pills on the market, but there is only one internationally recognized and clinically proven diet pill, and that is Orlistat. Orlistat is a relatively safe and widely available weight loss drug. It can mainly reduce the absorption of fat in the intestinal tract, thus reducing fat intake and weight loss. This drug is absorbed in the intestinal tract, so there are side effects, mainly in the digestive tract and liver and kidney metabolism. In particular, the use of Orlistat is prohibited in patients with liver and kidney diseases. Orlistat is used for a considerable period of time after which a lot of fat is excreted in the stool. The side effects are very small and the effect is very significant.